Polarization-encoded color images for information encryption enabled by HfN refractory plasmonic metasurfaces.

ABSTRACT: Polarization control plasmonic nanostructures provide a unique route to manipulate light-matter interactions at the nanoscale and are particularly powerful for information security applications, where polarization-encoded color images can be used for optical encryption and anticounterfeiting. Conventional plasmonic materials such as Au and Ag, however, suffer from poor thermal stability, limiting their integration into robust, CMOS-compatible devices. Here, we present a polarization-encoded color image platform based on refractory HfN plasmonic metasurfaces, which combine gold-like optical properties with exceptional hardness, compositional tunability, and superior high-temperature resilience. Periodically patterned HfN nanoantennas with widths of 200 nm exhibit well-defined localized surf

SUBMITTER: Chu YC 

PROVIDER: S-EPMC12714051 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature